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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 5    No. 4    December 1995

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MICROSTRUCTURES OF A NOVEL HIGH STRENGTH AND WEAR-RESISTING ZINC ALLOY
Li Yuanyuan; Xia Wei; Ngai Tungwai Leo; Luo Junming; Zheng Lingyi

Department of Mechanical Engineering; South China University of Technology; Guangzhou 51064

Abstract:Based on the results of observation and microanalysis by scan electron microscopy(SEM) and electron probe microanalysis(EPMA),the morphologies and microconstituents of different phases in a novel high strength and wear-resisting zinc alloy(ZMJ) were determined.The results of structural determination by X-ray diffraction(XRD) and transmission electron microscopy(TEM) indicate that the crystal lattice parameters of some phases in this alloy are changed due to the solute elements.It is also found that the microhardnesses of different phases are varied in a large range.Phases containing Mn are much harder than the matrix phase and despersion of tiny hard phases in the soft matrix is the general characteristic of this novel alloy.

 

Key words: zinc alloy; microstructure; strength; wear-resistance

ISSN 1672-7029
CN 43-1423/U

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